From marinas to boat dealers to boat owners, we have the capabilities to get the job done right. Our on-site inspection, repair and restoration of leather, vinyl, fabrics and plastics will save you time and money (sometimes as much as 90% of the cost of replacement).
What is the Black Knight satellite? It is a mysterious satellite, of unknown origin, discovered in 1960 which shadowed Sputnik. It is believed to have been of extraterrestrial origin, and signaled back old radio waves from the 1920s and 1930s before it disappeared.
Black holes can't be seen directly, but there is strong evidence that certain X-ray emissions are caused by black holes. The first really good candidate to be considered a bâ¦lack hole was Cygnus X-1. This was discovered in 1964, but only about ten years later did scientists think it could be a black hole. It was about 1990 that most scientists decided it really must be a black hole. 6 people found this useful.